When manufacturers switch to a new refrigerant, they also change other components in the system so that the cooling efficiency remains within spec. That said, my Jeep uses R1234YF and the A/C is so cold that I can't leave it on max cool for long even on a 100 degree day.
That would really suck if it were true, luckily it's not. I'll be in a place that's 115 today, you think my AC will be blowing 95? LOL.
Actually, it is. I used to work on A/C systems. Research Delta T and educate yourself. HVAC isn't magic.
Thats where recirculating air versus outside only comes into play.....
I have an MVAC certification. You absolutely will not get 90 degree air when it's 110. You will get 45-50. I just had the Rivian in for a full AC evac/charge and the tech left the thermometer in the vent. Under 50 while it was over 100, not on recirc (car was 150 inside anyway).
Today, my car's inside temp will hit 145 and the fans will kick on to prevent it going higher. It will be 110 outside. How exactly do you think the interior gets to 75 in less than five minutes?
Yup, recirc is a factor. So is humidity. But generally speaking, if you have a 20 degree differential, the A/C system is probably working just fine. Too many people think that they should see 40F at the vent and that's just not the case most of the time.
Cool story. Unfortunately, there's not am automotive A/C on Earth that will output 45-50 degree air from outside ambient over 100. Sorry, not possible. The math just doesn't math.
There's not a single automotive AC on earth that will be limited to a 20 degree differential when working correctly.Cool story. Unfortunately, there's not am automotive A/C on Earth that will output 45-50 degree air from outside ambient over 100. Sorry, not possible. The math just doesn't math.
Do you not understand that recirc is needed to allow the system to continue to drop interior temps when the heat load outside is high? This should be fairly obvious, no?
I never said that. Don't put words in my mouth.
Some components have to be changed such as the capillary tube or expansion valve. Other components don't have to be changed but should be changed if the manufacturer wants to keep the same cooling capacity. But they also might choose to not change components due to space, production or other non-technical (lol financial) reasons and deem the decreased capacity as the new spec. I have read discussion in the Dodge community that when Dodge moved to R1234YF they did not change the compressor, evap or condensor coils, which would result in lower cooling capacity.
